With the new 1.5 Redstone Update, there are new Redstone Lamp designs that can be made. The redstone block and daylight sensor make redstone lamps look even better. I made a video on the many lamp ideas I had. It's different lamp designs from street lamps to chandeliers. I hope this helps and sparks new designs for lamps! Hope you enjoy.
The texture pack I used in the video was AbyKraft.
Here is a few ideas/designs:
Ceiling Lamp (Redstone Block in the middle)
Wall Lamp (Daylight sensors on top)
Ceiling Lamp (Daylight Sensor on top, Piston pushes down the Redstone Block)